#include iostream
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#include stdlib.h
#include conio.h
#include ctype.h
using namespace std;
void xuanzepaixu() //选择排序函数
{
printf("待添加,请按任意键继续...");
getchar();
}
void erfenpaixu() //二分查找函数
{
printf("待添加,请按任意键继续...");
getchar();
}
void menu() //主菜单
{
system("cls"); //清屏
printf("\n\t\t\t 菜单\n");
printf("\t\t\t#***********************#\n");
printf("\t\t\t# 1选择排序 #\n");
printf("\t\t\t# 2二分查找 #\n");
printf("\t\t\t# 3返回 #\n");
printf("\t\t\t# 4---关闭 #\n");
printf("\t\t\t#***********************#\n");
printf("\t\t\t 请选择(1-4) =:");
}
void main()
{
char select;
while(1)
{
menu();
system("COLOR 9f");
scanf("%c",select);
if(select=='3')
break; //返回上级菜单
else
{
getchar(); //读入回车符
if(!isdigit(select)) //如果不是数字字符
{
printf("\n\7Your select may be wrong, must enter the digit!\n");_getch();
}
else
{
switch (select)
{
case '1': xuanzepaixu();break;
case '2': erfenpaixu();break;
case '4':exit(0); //直接退出
default:
{
printf("\n\7\7Your selected digit may be wrong, select again!\n");
_getch();
break;
}
}
}
}
}
}
1、对于窗口组件菜单，需要根据不同平台，通过图形编程接口，进行菜单的编制。
例程：
#includestdio.h
#includegraphics.h
#includeconio.h
void main()
{
char str;
int i,k,choice=1;
int gd=DETECT,gm;
initgraph(gd,gm," ");
setbkcolor(2);
settextstyle(3,0,3);
outtextxy(140,120,"A. The Mock Clock.");
outtextxy(140,150,"B. The Digital Clock.");
outtextxy(140,180,"C. Exit.");
setlinestyle(0,0,3);
rectangle(170,115,370,145);
/*按上下键选择所需选项*/
for(i=1;i=100;i++)
{
str=getch();
if(str==72)
{
--choice;
if(choice==0)choice=3;
}
if(str==80)
{
++choice;
if(choice==4)choice=1;
}
if(str==13)break; ／＊按回车键确认＊／
/*画图做菜单*/
cleardevice();
switch(choice)
{ case 1: setlinestyle(0,0,3);
rectangle(170,115,400,145);
settextstyle(3,0,3);
outtextxy(140,120,"A. The Mock Clock.");
settextstyle(3,0,3);
outtextxy(140,150,"B. The Digital Clock.");
outtextxy(140,180,"C. Exit.");
break;
case 2: setlinestyle(0,0,3);
rectangle(170,145,400,175);
settextstyle(3,0,3);
outtextxy(140,120,"A. The Mock Clock.");
settextstyle(3,0,3);
outtextxy(140,150,"B. The Digital Clock.");
settextstyle(3,0,3);
outtextxy(140,180,"C. Exit.");
break;
case 3: settextstyle(3,0,3);
outtextxy(140,120,"A. The Mock Clock.");
outtextxy(140,150,"B. The Digital Clock.");
settextstyle(3,0,3);
outtextxy(140,180,"C. Exit.");
setlinestyle(0,0,3);
rectangle(170,175,400,205);
break;
}
}
if(i=100)exit(0);／＊如果按键超过100次退出＊／
switch(choice)/*这里引用函数，实现所要的功能*/
{
case 1: cleardevice();
setbkcolor(4);
settextstyle(3,0,4);
outtextxy(160,120,"No.1 have not built."); break;
case 2: cleardevice();
setbkcolor(4);
settextstyle(3,0,4);
outtextxy(160,150,"No.2 have not built.");
break;
case 3: exit(0);
}
getch();
closegraph();
}
2、对于命令行菜单，直接通过不断刷新输出来模拟菜单行为。
例程：
#include stdio.h
#include stdlib.h
#include string.h
int n,t,k;
int m;
char s1[20],s2[20],c;
char **l;
char *num[]={"one","two","three","four","five","six","seven","eight","nine","ten"};
void menu()
{
printf("\n\n\t\t*******************************************************\n");
printf("\t\t** 1.查找字符串S1中S2出现的次数 **\n");
printf("\t\t** 2.统计字符串中大小写字母，数字出现的次数 **\n");
printf("\t\t** 3.将数字翻译成英语 **\n");
printf("\t\t** 4.结束 **\n");
printf("\t\t*******************************************************\n");
printf("\t\t 您的输入：");
fflush(stdin);
scanf("%d",n);
}
void check()
{
char a[20],b[20];
int j=0,k,m,l=0;
int t=0,n=0;
printf("请输入主字符串：\n");
scanf("%s",a);
k=strlen(a);
printf("请输入子字符串：\n");
scanf("%s",b);
m=strlen(b);
for(n=0;nk;n++)
if(a[n]==b[0])
{
j++; /*记录相同的字符数*/
do
{
if(a[++n]==b[++t])
{
j++;
if(j==m)
{
l++;/*子字符串相同数*/
j=0;/*判断后相同字符数归零*/
t=-1;/*判断中if中++t;t将会归零*/
}
}
else
{
j=0;
t=0;
break;/*如果不同跳出while循环让for使n+1继续判断*/
}
}while(a[n]!='\0');/*查找完字符数组a结束*/
}
printf("子字符串出现次数：\n%d\n",l);
}
void cout()
{
int n=0,t=0,k=0;
printf("请输入一个字符串：\n");
fflush(stdin);/*清除缓冲*/
while((c=getchar())!='\n')
{
if(c='a'c='z')
n++;
if(c='A'c='Z')
t++;
if(c='0'c='9')
k++;
}
printf("有大写字母：\n%d\n",t);
printf("有小写字母：\n%d\n",n);
printf("有数字：\n%d\n",k);
}
void number()
{
l=num;
printf("请输入一个数字：(0-10)\n");
fflush(stdin);
scanf("%d",m);
printf("%d对应的英文是：\n%s\n",m,*(l+m-1));
}
void main()
{
while(1)
{
system("cls");
menu();
switch(n)
{
case 1:system("cls");check();system("pause");break;
case 2:system("cls");cout();system("pause");break;
case 3:system("cls");number();system("pause");break;
case 4:system("cls");break;
default:system("cls");break;
}
if(n==4) break;
}
printf("感谢使用\n");
}
//求长度
int Length(char* szSrc)
{ static int nCount=0;
while(*(szSrc+nCount)!='\0')
nCount++;
return nCount;
}
//有一个字符串，包含n个字符。写一函数，将此字符串从第m个字符开始的全部字符复制成另一个字符串。
char* Mid(char* szSrc,int n1,int n2)
{
static char sz[1024];
memset(sz,0,sizeof(sz));
strncpy(sz,szSrc+n1,n2-n1+1);
return sz;
}
//逆序 数字逆序要把长度也送进去
void changestr(char *szSrc)
{
static int nCount=0;
do(*(szSrc+nCount)!='\0')
nCount++;
for(int i=0; i=nCount/2;i++)
{
char ch;
ch =*(szSrc+i);
*(szSrc+i) = *(szSrc+nCount-i);
*(szSrc+nCount-i)=ch;
}
